Manufacture technique and electrical properties evaluation of bamboo charcoal polyester/stainless steel complex yarn and knitted fabrics |
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Authors: | Jia-Horng Lin An-Pang Chen Chin-Mei Lin Ching-Wen Lin Chien-Teng Hsieh Ching-Wen Lou |
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Institution: | (1) Minimally Invasive Surgical Services, Greenville Hospital System University Medical Group, 701 Grove Road, Greenville, SC 29605, USA;(2) Division of Gastrointestinal and Minimally Invasive Surgery, Carolinas Medical Center, Charlotte, NC, USA |
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Abstract: | There are derivative problems of electromagnetic wave radiation accompanying the advances of science and technology nowadays
and secure protections are also emphasized gradually. To shield these electromagnetic wave radition jeopardizing people’s
health, in this study, stainless steel wires were the core yarn and bamboo charcoal polyester textured yarns were the wrapped
yarn. The bamboo charcoal polyester/stainless steel (BC/SS) complex yarns were manufactured using a rotor twister machine.
The BC/SS complex knitted fabrics were woven with the complex yarns employing a circular knitting machine. Three manufacture
parameters were the wrapped amount of the complex yarn (2 to 6 turns/cm), the lamination amount of the knitted fabrics (1
to 6 layers) and lamination angles of the knitted fabrics (0°/0°/0°/0°/0°/0°, 0°/45°/90°/−45°/0°/45°, and 0°/90°/0°/90°/0°/90°).
The knitted fabric exhibited the lowest surface resistance 32.3 Ω/sq. Optimum electromagnetic shielding effectiveness (EMSE)
was 45 dB when the knitted fabrics were with 0°/45°/90°/−45°/0°/45° laminating in 0.51 GHz. |
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